* Give the window opened by "View logfile" a better title
* Fix bugs in WGL GLX which prevented pbuffers from being created with
certain fbconfigs
* Improve the check that window position is visible to work correctly
for non-rectangular virtual desktops
* Downgrade the "forcing window to exist" log message from error to debug
* Some compilation warning fixes
* Remove an incorrect assertion in WGL GLX, triggered by
glXSwapBuffers() in the piglit glx_make_current test